Hi Mike,
I have changed the libraries so that I am now using mbed-os and now the Serial function is working. I am not sure what happened as I haven’t changed anything code wise.
Regarding the usage of the bootloader, I am a little confused as to how I would transfer a file onto the mDot via LoRa for example? Should I be setting up an SPISlave on the LoRa for reading any incoming files?
Thank you for your help